63122261 has 4 divisors (see below), whose sum is σ = 63143232. Its totient is φ = 63101292.

The previous prime is 63122249. The next prime is 63122291. The reversal of 63122261 is 16222136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63122261 - 2¹⁸ = 62860117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63122221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5021 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (15785808).

Almost surely, 2^63122261 is an apocalyptic number.

It is an amenable number.

63122261 is a deficient number, since it is larger than the sum of its proper divisors (20971).

63122261 is a wasteful number, since it uses less digits than its factorization.

63122261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20970.

The product of its digits is 864, while the sum is 23.

The square root of 63122261 is about 7944.9519193007. The cubic root of 63122261 is about 398.1629531462.

Adding to 63122261 its reverse (16222136), we get a palindrome (79344397).

The spelling of 63122261 in words is "sixty-three million, one hundred twenty-two thousand, two hundred sixty-one".